Jill, is it possible to ban the kitties at least from the bedroom/bed? That will help a lot, as of course we spend all our sleeping hours in the bed ... If they tend to sleep on your bed during the day, for example, trying putting a plastic tablecloth down on the bed in the morning once you are both up for the day, and take it off at night, that will keep the dander from accumulating in the blankets and pillows, which can be a major irritant.